Boston to Miami in September 2026

Dated one-way fares from Boston to Miami in September 2026. Use the calendar to see which days are cheaper.

Lowest this month $125

Highest this month $206

Sample fare $122

Airports BOS–MIA

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September 2026 price calendar

From $125 · up to $206

Mon

Tue

Wed

Thu

Fri

Sat

Sun

2 $155 3 $149 4 $141 5 $133 6 $139 7 $168 8 $187 9 $187 10 $187 11 $187 12 $187 13 $206 14 $166 15 $166 16 $125 17 $160 18 $160 19 $160 20 $195 21 $201 22 $201 23 $201 24 $201 25 $206

Miami MIA

$125

Sep 16, 12:54pm · 7h 44m · 1 stop

BOS → MIA · Frontier Airlines

Miami MIA

$133

Sep 05, 12:45pm · 7h 44m · 1 stop

BOS → MIA · Frontier Airlines

Miami MIA

$139

Sep 06, 9:36am · 6h 45m · 1 stop

BOS → MIA · Frontier Airlines

Miami MIA

$149

Sep 03, 12:45pm · 8h 8m · 1 stop

BOS → MIA · Frontier Airlines

This page is only September 2026 on the Boston to Miami route. Open the full route if you want the next months side by side.

Prices move as seats sell. Confirm the live itinerary before you book Boston to Miami in September 2026.